my steel blue 328is looks GREAT! The tint is very similar to the pics of the M3 on the IAA website, but not quite as dark. I think the reflective tint looks especially well with metallic paint. HIGHLY recommended - my car has a totally new look. Now if I could only get new springs to lower it about 1-2 inches.
BTW, the tint film I used was Johnsons (identical to Llumar) and it cost me $150 out the door. The metalized films are the only ones I'd use. They're a little reflective, keep the car very cool on hot days, block 99% of UV rays (great for leather interiors), and are guaranteed for the life of your car.